So you are telling me that it is more plausible for there to be two separate realities, rather than one reality with a model of it, and another model inside that model? I can build a real house, with a doll house in it, and a miniature doll house inside that one. I can't imagine how two or three coexisting realities is a simpler explanation than this. Sure, it seems real when you are playing with the doll house, but common sense tells you it is not.

I'm not talking about ghosts, but models. If you like, you can say that objective reality is what is actually real, and subjective reality is our model of what we think is real. If so, then perhaps we can agree and move on. But I think you are trying to attribute something more to this phenomenon, to invoke a supernatural explanation...